3. consider the mechanism given in recitation. draw a molecule of acetic anhydride indicating which c is a carbonyl carbon. why does the carbonyl carbon of the acetic anhydride undergo nucleophilic attack? (3

the density(ratio between mass and volume as m/v) decreases from top to bottom in periodic table group as the size increases and nuclear charge decreases. but in periods density increases from left to right as atom size decreases and nuclear charge increases.